On the surface, Daniel DelPurgatorio’s feature debut Marshmallow looks like every other 1980s summer camp horror flick you grew up watching on worn-out VHS tapes. Writer Andy Greskoviak loads the front end with familiar comfort food: pine woods bathed in late afternoon sun, counselors who vanish the exact second trouble starts, awkward kid rivalries, timid crushes, and the mandatory creepy urban legend told around a crackling campfire. We follow Morgan, played by Kue Lawrence, a quiet kid burdened with an awful bowl cut, fresh family grief, and a total terror of deep water. He gets dumped at Camp Whispering Pines for the summer and immediately becomes an easy target for the local camp bullies. His only real allies are Pilar, played by Kai Cech, and Dirk, played by Max Malas, two fellow outcasts just trying to make it to September without getting stuffed into a locker or pushed off the dock. Things take a dark turn when the counselors share the local legend of "The Doctor," a...